Source Fabrication Detection Model based on Key-value Variables in Reactive Protocols of VANET

Abstract

The vehicular communication hasbeen considered as the most promising wirelesscommunication technology in the computernetwork scenario, the beginning of which hasmarked a great change for the passengers in therange of safety application. The development ofvehicular communication increased securitythreats and weaknesses. Vehicularcommunication is exposed to severalvulnerabilities such as Denial of Service attacks(DoS), Black hole and fabrication attacks.Fabrication attack consists of a malicious nodethat modifies information in the packet causingcritical damage in the network like congestionand high delay. In this paper, we propose a novelfabrication model which consists of twoalgorithms one for source attack and another foranti-source attack. In such attack, the maliciousnode fabricates the source address of the routerequest message; this means that the maliciousnode selects randomly from the routing table asource address that is different from the inputsource address and the source address of thecurrent node and forwards the message to itsneighbors. In the anti-attack, our novel proposedalgorithm has the role to identify the sourceattack during the communication. We create twovariables at each node in order to check if theinput source address in RREQ is equal to theoutput source address in RREQ; otherwise, thenode is identified as a malicious node and anurgent message is broadcasted to all nodes toremove it from their routing table. The proposedalgorithm targets to minimize the delay ofpackets. Our simulation is done using SUMO0.22 simulator, NS-2.35 and awk scripts; thesimulation was applied on Hamra area (Beirut,Lebanon). The results show good improvementsin terms of packet delivery ratio and the end toend delay.